CN110751805A

CN110751805A - Residential quarter fire alarm device

Info

Publication number: CN110751805A
Application number: CN201810807953.7A
Authority: CN
Inventors: 贺贤俊; 陈晓琪; 刘东东
Original assignee: Northwest A&F University
Current assignee: Northwest A&F University
Priority date: 2018-07-22
Filing date: 2018-07-22
Publication date: 2020-02-04

Abstract

The utility model provides a residential area fire alarm device, belongs to sensor detection technical field, is mainly by temperature-sensing detector, CO detector, smoke detector, CC2530 chip, addressing ware, alarm module, serial communication module, singlechip and button and display module constitute, its characterized in that: the temperature detector, the CO detector and the smoke detector are connected with the CC2530 chip, the CC2530 chip is connected with the addressing device, the single chip microcomputer is connected with the serial port communication module, and the keys are connected with the display module and the single chip microcomputer.

Description

Residential quarter fire alarm device

Technical Field

The invention relates to a residential community fire alarm device, and belongs to the technical field of sensor detection.

Background

The fire disaster poses great threat to the life and property of people, and the development of a fire alarm system is a hot topic in recent years. In many areas of China, a single sensor is still adopted to carry out a fire alarm system, and the fire alarm system is greatly influenced by external environmental factors. The wireless technology and the single chip processing technology have the advantages of short time delay, reliable data transmission and the like, and are more suitable for application of the fire alarm system in residential areas. The invention develops a residential community fire alarm device.

Disclosure of Invention

Aiming at the defects, the invention provides a residential area fire alarm device.

The invention is realized by the following technical scheme: the utility model provides a residential area fire alarm device, is mainly by temperature-sensing detector, CO detector, smoke detector, CC2530 chip, addressing ware, alarm module, serial communication module, singlechip and button and display module constitute, its characterized in that: the temperature-sensing detector, the CO detector and the smoke detector are connected with a CC2530 chip, the CC2530 chip is connected with an addressing device, the alarm module is connected with the CC2530 chip, the serial communication module is connected with the CC2530 chip, the single chip microcomputer is connected with the serial communication module, and the keys are connected with the display module and the single chip microcomputer.

In the CO detector and the smoke detector, the smoke sensor is mainly used for receiving detection signals, current signals of a receiving tube are small and difficult to identify, a secondary amplifier is required for amplification by 100, and noise can be filtered by a low-pass filter. The CO sensor only needs one amplifier for amplifying by 1.5 times so as to prevent noise of noise elimination from being amplified, and the amplifier of a simple two-order low-pass filter is used for amplification. Smoke sensor acquisition circuit. The smoke particles are scattered through the smoke particles, the infrared receiving tube is amplified by the LM324 two-stage amplifying circuit, and after filtering of the filtering circuit, high-frequency noise and low-frequency noise in the signals are removed.

The CC2530 chip and the singlechip MSP430F5137 use a 12V direct current power supply. With TA78M05 and ME6219C power chips, a fuse F1 is necessary in the circuit to prevent the circuit from shorting or overloading, which could burn out the hardware if the current is high. The power chip TA78M05 is used for converting the 12V voltage into the 5.0V voltage, so that the circuit cannot be burnt out due to overlarge voltage; the voltage can be reduced from 5.0V to 3.3V with the power conditioning circuit. Since the power source will be exhausted with the long-term use of the battery, the battery must be charged at this time. When the voltage in the circuit is normal, the green light D4 is lighted, when the voltage of the battery is lower than a certain value, the red indicator light D3 is lighted, the battery is charged in time, and the power supply needs to be replaced in time to ensure the normal work of the main controller; the MAX811 chip is controlled by the microprocessor voltage and can accurately monitor 5V and 3.3V voltages.

The buzzer of the alarm module is controlled by P1.0. When the port outputs high level, the base voltage of the PNP triode Q5 is lower than the emitter voltage, and the buzzer generates an alarm. When the port outputs low level, the base voltage of the PNP transistor is higher than the emitter voltage, Q5 is cut off, and the buzzer does not give an alarm.

The invention has the advantages that: the residential community fire alarm device detects fire by using a comprehensive method of temperature detection, carbon monoxide detection and smoke detection, has high accuracy, is simple and efficient by using wireless transmission, and has reliable data transmission and stable operation.

Drawings

FIG. 1 is a schematic diagram of the system of the present invention.

In the figure, the device comprises a temperature-sensing detector 1, a CO detector 2, a smoke detector 3, a CC2530 chip 4, an addressing device 5, an alarm module 6, a serial communication module 7, a singlechip 8, a singlechip 9, keys and a display module.

Detailed Description

The utility model provides a residential quarter fire alarm device, is mainly by temperature-sensing detector 1, CO detector 2, smoke detector 3, CC2530 chip 4, addressing ware 5, alarm module 6, serial communication module 7, singlechip 8 and button and display module 9 constitute, its characterized in that: the temperature-sensing detector 1, the CO detector 2 and the smoke detector 3 are connected with a CC2530 chip 4, the CC2530 chip 4 is connected with an addressing device 5, the alarm module 6 is connected with the CC2530 chip 4, the serial communication module 6 is connected with the CC2530 chip 4, the single chip microcomputer 8 is connected with the serial communication module 7, and the keys are connected with the display module 9 and the single chip microcomputer 8.

In the two sensors, the smoke sensor is mainly used for receiving detection signals, current signals of a receiving tube are small and difficult to identify, a secondary amplifier is required for 100 amplification, and a low-pass filter can be used for filtering noise. The CO sensor only needs one amplifier for amplifying by 1.5 times so as to prevent noise of noise elimination from being amplified, and the amplifier of a simple two-order low-pass filter is used for amplification. Smoke sensor acquisition circuit. The smoke particles are scattered through the smoke particles, the infrared receiving tube is amplified by the LM324 two-stage amplifying circuit, and after filtering of the filtering circuit, high-frequency noise and low-frequency noise in the signals are removed.

The CC2530 chip 4 and the singlechip MSP430F5137 use a 12V direct current power supply. With TA78M05 and ME6219C power chips, a fuse F1 is necessary in the circuit to prevent the circuit from shorting or overloading, which could burn out the hardware if the current is high. The power chip TA78M05 is used for converting the 12V voltage into the 5.0V voltage, so that the circuit cannot be burnt out due to overlarge voltage; the voltage can be reduced from 5.0V to 3.3V with the power conditioning circuit. Since the power source will be exhausted with the long-term use of the battery, the battery must be charged at this time. When the voltage in the circuit is normal, the green light D4 is lighted, when the voltage of the battery is lower than a certain value, the red indicator light D3 is lighted, the battery is charged in time, and the power supply needs to be replaced in time to ensure the normal work of the main controller; the MAX811 chip is controlled by the microprocessor voltage and can accurately monitor 5V and 3.3V voltages.

And the buzzer of the alarm module 6 is controlled by P1.0. When the port outputs high level, the base voltage of the PNP triode Q5 is lower than the emitter voltage, and the buzzer generates an alarm. When the port outputs low level, the base voltage of the PNP transistor is higher than the emitter voltage, Q5 is cut off, and the buzzer does not give an alarm.

When the device works, three sensors, namely a smoke sensor, a CO sensor and a temperature sensor, simultaneously acquire field analog signals, each sensor is provided with a corresponding conditioning circuit besides a self circuit, after the analog signals are acquired, the analog signals are subjected to analog-to-digital conversion, noise removal, multiple amplification and other processing, and a CC2530 chip sends commands through a radio frequency circuit to receive and feed back the signals. And calculating the fire condition according to the received feedback signal, directly driving a buzzer of the alarm module to alarm, sending out fire information, and taking countermeasures immediately after external equipment receives the fire information.

It will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in the embodiments described above without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.

Claims

1. The utility model provides a residential area fire alarm device, is mainly by temperature-sensing detector, CO detector, smoke detector, CC2530 chip, addressing ware, alarm module, serial communication module, singlechip and button and display module constitute, its characterized in that: the temperature-sensing detector, the CO detector and the smoke detector are connected with a CC2530 chip, the CC2530 chip is connected with an addressing device, the alarm module is connected with the CC2530 chip, the serial communication module is connected with the CC2530 chip, the single chip microcomputer is connected with the serial communication module, and the keys are connected with the display module and the single chip microcomputer.

2. A fire alarm device for a residential area as claimed in claim 1, wherein: in the CO detector and the smoke detector, the smoke sensor is mainly used for receiving detection signals, current signals of a receiving tube are small and difficult to identify, a secondary amplifier is required for amplification by 100, and noise can be filtered by a low-pass filter. The CO sensor only needs one amplifier for amplifying by 1.5 times so as to prevent noise of noise elimination from being amplified, and the amplifier of a simple two-order low-pass filter is used for amplification. Smoke sensor acquisition circuit. The smoke particles are scattered through the smoke particles, the infrared receiving tube is amplified by the LM324 two-stage amplifying circuit, and after filtering of the filtering circuit, high-frequency noise and low-frequency noise in the signals are removed.

3. A fire alarm device for a residential area as claimed in claim 1, wherein: the CC2530 chip and the singlechip MSP430F5137 use a 12V direct current power supply. With TA78M05 and ME6219C power chips, a fuse F1 is necessary in the circuit to prevent the circuit from shorting or overloading, which could burn out the hardware if the current is high. The power chip TA78M05 is used for converting the 12V voltage into the 5.0V voltage, so that the circuit cannot be burnt out due to overlarge voltage; the voltage can be reduced from 5.0V to 3.3V with the power conditioning circuit. Since the power source will be exhausted with the long-term use of the battery, the battery must be charged at this time. When the voltage in the circuit is normal, the green light D4 is lighted, when the voltage of the battery is lower than a certain value, the red indicator light D3 is lighted, the battery is charged in time, and the power supply needs to be replaced in time to ensure the normal work of the main controller; the MAX811 chip is controlled by the microprocessor voltage and can accurately monitor 5V and 3.3V voltages.

4. A fire alarm device for a residential area as claimed in claim 1, wherein: the buzzer of the alarm module is controlled by P1.0. When the port outputs high level, the base voltage of the PNP triode Q5 is lower than the emitter voltage, and the buzzer generates an alarm. When the port outputs low level, the base voltage of the PNP transistor is higher than the emitter voltage, Q5 is cut off, and the buzzer does not give an alarm.